CVE-2026-71433
LangGraph: Namespace prefix matching crosses segment boundaries in Postgres and SQLite stores
Description
LangGraph Checkpoint Postgres and SQLite Checkpoint are the Postgres and SQLite implementations of LangGraph's checkpoint saver. Prior to 3.1.1, the langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite packages persisted hierarchical namespaces as a dot joined string and scoped reads by matching that string as a simple prefix pattern, so a read scoped to one namespace could also match a sibling namespace whose flattened form shares the same leading characters, or a namespace label containing unescaped pattern metacharacters, allowing an authenticated caller to retrieve stored items belonging to another tenant or user through an ordinary scoped search or list namespaces call, with no crafted input required. This issue is fixed in versions 3.1.1 of langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite.
INFO
Published Date :
Aug. 6, 2026, 10:18 p.m.
Last Modified :
Aug. 6, 2026, 10:18 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update langgraph-checkpoint-postgres to version 3.1.1 or later.
- Update langgraph-checkpoint-sqlite to version 3.1.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-71433.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-71433 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-71433
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-71433 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-71433 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'langchain-ai', 'product': 'langgraph', 'versions': [{'status': 'affected', 'version': '< 3.1.1'}]}, {'vendor': 'langchain-ai', 'product': 'langgraph-checkpoint-sqlite', 'versions': [{'status': 'affected', 'version': '< 3.1.1'}]}, {'vendor': 'langchain-ai', 'product': 'langgraph-checkpoint-postgres', 'versions': [{'status': 'affected', 'version': '< 3.1.1'}]}] Added Description LangGraph Checkpoint Postgres and SQLite Checkpoint are the Postgres and SQLite implementations of LangGraph's checkpoint saver. Prior to 3.1.1, the langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite packages persisted hierarchical namespaces as a dot joined string and scoped reads by matching that string as a simple prefix pattern, so a read scoped to one namespace could also match a sibling namespace whose flattened form shares the same leading characters, or a namespace label containing unescaped pattern metacharacters, allowing an authenticated caller to retrieve stored items belonging to another tenant or user through an ordinary scoped search or list namespaces call, with no crafted input required. This issue is fixed in versions 3.1.1 of langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite. Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-200 Added CWE CWE-863 Added Reference https://github.com/langchain-ai/langgraph/commit/66ebe1a0da921e73f0f9f879ba105d314c079f7c Added Reference https://github.com/langchain-ai/langgraph/pull/8478 Added Reference https://github.com/langchain-ai/langgraph/releases/tag/checkpointpostgres%3D%3D3.1.1 Added Reference https://github.com/langchain-ai/langgraph/releases/tag/checkpointsqlite%3D%3D3.1.1 Added Reference https://github.com/langchain-ai/langgraph/security/advisories/GHSA-47pj-3jcm-6whg